CMT-DC500MD, HCD-J300 - Sony Audio Service Manual (repair manual). Page 21

21

[Cold Reset]
• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to

the customers.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. Press three buttons  z MD  ,  >  (MD) and  x  (TAPE) simultaneously.
3. Press  ?/1  button again, the LCD displays “Initialize” and the set is reset.
• Initialized conditions

FUNCTION : TUNER FM 87.5MHz
VOLUME

: MIN

DSG

: ON

[PANEL Test  Mode]
• This mode is used to check the software version, LCD, LED and keyboard.

Procedure:
1.

Press three bottons  z MD  ,  >  (MD) and  X  (TAPE) simultaneously.

2.

LEDs and LCD are all turned on.

3.

When you want to enter the software version display mode, press  REPEAT .The model name and destination are displayed and “MD”
and “CD” segments flash.

4.

Each time  REPEAT  is pressed, the display changes MC, GC, CD, CDD, CDMA,CDMB, BDA, BDB, ST, TA, TM, TC and MD in this
order, and returns to the top of the version display.

5.

When  REC MODE  is pressed while the version numbers are being displayed, year, month and day of the software creation appear.
When  REC MODE  is pressed again, the display returns to the software version display. When  REPEAT  is pressed while year, month
and day of the software creation are being  displayed, the year, month and day of creation of the software versions are displayed in the
same order of version display.

6.

Press  PLAYMODE / DIRECTION  button, and the key check mode is activated. In the key check mode, the LCD displays “K 0 J 0 V
0”. Each time a button is pressed, “K 0” value increases. However, once a button is pressed, it is no longer taken into account. “V 0”
value increases like 1, 2, 3.... if rotating  VOLUME  knob clockwise, or it decreases like 0, 9, 8.... if rotating counter-clockwise.

7.

To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

[MC Test  Mode]
• This mode is used to check operations of the respective sections of Amplifier, Tuner, CD and Tape.

Procedure:
1.

Press the  ?/1  button to turn on the set.

2.

Press the three buttons  SYNCHRO REC  ,  >  (MD) and  X (TAPE) simultaneously.

3.

The “MD” and “TAPE” segments flash.

4.

When the VOLUME  knob is rotated clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME
MAX” appears for two seconds. then the display returns to the original display.

5.

When the VOLUME  knob is rotated counter-clockwise even slightly, the sound volume decreases to its minimum and a message
“VOLUME MIN” appears for two seconds, then the display returns to the original display.

6.

To exit from this mode, press three buttons  z MD , >  (MD) and  x  (TAPE) simultaneously or disconnect the power cord.

Note 1: About “R”

As this unit has only a few buttons, some operations require the use of remote commander (RM-SDC500/provided with unit: 1-476-756-11)
buttons. These operations are indicated as “R” in this manual.
Example:

MENU/NO “R”

...Press the 

[MENU/NO]

 button of the remote commander.

Note 2: Incorrect operations may be performed if the MD test mode is not entered properly.

In this case, press the ?

/1

button to turn the power off, and retry to enter the MD test mode.